Coating machine



Nov. 6, 1928. 1,690,344

H. o. POHRT COATING MACHINE Filed Jan. 16,1926

jwumdoz 7 l apparatus.

Patented Nov. 6, 1928 "UNITED STATES PATENT OFFICE- nanny 0. 201mm, orFLINT, MICHIGAN, ASSIGNGR TO 'A c SPARK PLUG company,

or FLINT MICHIGAN. A C NY OF MICHIGAN,

coa'rme MACHINE.

Application filed January 16,1926. Serial No 81,688.

An efficient means for'coating such disks as figurewheels of odometersis the purpose of thecoating machine constitutin the subject matter ofthis invention. ile de I. signed and used for the" specific purposestated, the use for other purposes will be suggested to those havinganalogous Another object is to provide a manual control for such anapparatus whereby upon a single operation the valve of the spraying gunis i opened to eject the coating material, and the carriage having thespraying gun is moved in a direction to coat the several figure wheels.

Other objects will; be obvious upon the reading 4 of the detaileddescription which follows.

In the drawing accompanying the s ecification, Figure 1. is a sideelevation o the Figure 2 is a plan view. Fig ure 3cis an end view. 1Figures 4 and 5 are two sectional views each on the line '44 Figure 1,showing parts of the apparatus in two different positions. Figure 6 is alongitudinal section of a detail.

Referring now to the drawings illustrative of a single embodiment of theinvention, numeral 1 shows a base or platform upon which the apparatusmay be mounted.

2. The inclined plane has at its lower end feet 3 and fastening means 4by which the feet 3 are secured to the base 1. At the up er end of theinclined platform are legs 5 'om which project feet 6 through whichfastening means 7 pass to secure the feet 6 to the base 1. Extendinglengthwise through the plane are two Ways .8, one of roblems to solve,and it is not intended to imit nut to engage the screw for the purposeofUpon this base is mounted an inclined plane ing "un. The clampingmembersihold th s ase 11 in position by means of screw bolts 12and wingnuts 13. The spray gun 14 18 mounted upon the, base by means of a stem15. From the ear of the gun extends a connection 16 for a supply ofcoating material of any desired kind. Air under.

pressure is admitted through tube 17 and conduit 18. Suitable means inthe form of an air valve is provided for admitting t-he compressed airinto the gun. As this air valve is no part of theinvention itneed not bemore particularly referred to. Extending lengthwise of the inclinedplane, midway betweenthe ways and parallel with and, slightly beneaththe plane is ascrew rod 19. The screw rod 19 is journalled in the block20 at one end and in the base of the inclined "plane at the other end.At its'lower end is mounted a pulley 21 by means of which the screw maybe rotated. Depending from the carriage and extending through aslot 22in the inclined plane, is a pivoted link member 23. This link member isformed as a half moving the carriage and the gun along the inclinedplane. Simultaneous operation of the valve and the Jmovement ofthecarriage along the plane is obtained by the use of a lever 24. Thislever is connected to the half nut 23 and is also connected by a link 25with a bell crank lever 26, the latter being operativelyconnected to thevalve of the spray gun. It will be understood par ticularly by refernceto Figures 4 and 5 that when the lever 24 is depressed from ositionshown in Figure 4 to that shown by igure 5, the half nut engaging thescrew and the valve is opened. In this latter position of the parts thecarriage of the gun moves down the inclined plane and the paint orcoating material is delivered by the gun.

At the other side of the inclined plane near the base is mounted abifurcated bracket 27. The bifurcations 28 furnish bearings for atubular rotating shaft 29. This tubular shaft has an enlargement 30which limits its movement in one direction in the bearings 28. Adjacentthe other hearing 28 is secured a pulley 31. The tubular opening inshaft 29 is enlarged atthe lower end asshown at 32. Into the threadedend of this opening 32 is fastened a nut 33.

lidable in the tubular passage of shaft 29' is push rod 34. Push rod 34has a knob 35 at its outer end serving as a handle and near its otherend is an enlargement 36 positioned to move within the enlarged opening32, the movement of )ush rod 3d being limited by engagement 0 part 36with the nut 33 at one end and by engagement with the end of theenlarged opening 32 at its other end. Into the upper end of the tubularopening of shaft 29 may be inserted a spindle carrying a plurality offigure wheels 3? to be coated. Owing to the angular position of thespindle the hgure wheels may he slipped on to the spindle and willremain in position under the influence of gravity, it being unnecessaryto provide any means to hold the wheels in their assembled position.From an examination of Figure (3, to be seen when the push rod 34 is atits outermost position. the spindle carrying the ligure wheels may beinserted in the tubular opening in the shaft 2%. TVhen it is desired toremove the figure wheels 37 with the spindle lrom shait 29 the rod 34:may be pushed inwardly and the spindle carrying the wheels 37 will beforced out from the opening into the shaft.

The pulleys 21 on the screw shaft and 81 on the tubular shaft arearranged to be simultaneously driven by a belt 35 engaging these pulleysand also engaging a pul ")9 on the counter shaft 40. This countershaftmay be driven directly by a motor or driven indirectly from anysource of power.

The operation of the mechine will be readily understood from theforegoing description without any extended explanation. A convenientnumber of odometer figure wheels or other articles to be coated areplaced upon a spindle which latter is then inserted in the appropriateend of the tubular shaft. Preparatory to setting the mechanism intooperation, the carriage is moved to the upper end of the inclined plane,The counter shaft carrying the driving pulley is now set into operation,causing the rotation of the screw rod and of the spindle carrying thefigure wheels to be coated. The operator then depresses the leverwhereupon the half nut engages the driven screw and the valve is openedto air pressure. 'l' he carriage then moves down the inclined plane and"the rotating wheels will be coated with the material from the gun.

I claim:

1. An apparatus for coating rotating articles including a movingcarriage carrying the spraying gun, the gun having valve operatingmeans, mechanical means or moving the carriage, and manually operatingmeans for simultaneously applying the mechanical means and moving thevalve operating means.

2. In a coating apparatus, an inclined plane, a rotating spindlecarrying shaft parallel with said plane, a spray un car riage movablealong the plane in a (ireclion parallel to said shaft, a rotating screwrod parallel to the plane and beneath the carriage. pulleys on the shaftand screw rod, a belt simultaneously driving both pulleys, the spray gunhaving a valve controh means to simultaneously open the valve controland to apply the rotation of the screw rod to the movement of thecarriage.

In testimony whereof I allix my signature.

HENRY O. POHRT.

